Power-driven meat-saw.



P. F, WBAR & R. MoRGB-NLIER. POWER DRIVEN MEAT SAW. APPLICATION FILEDJANZQ, 1810.

1,031,217. Patented July 2,' 1912.

V n: By 1 -n..

A TTORNE Y UNITED; STWENT OFFICE. l

. FRANK r. WEAR, oF sAN FRANcIsco, AND ROBERT' MORGENEIER, or OAKLAND,

y CALIFORNIA; sAID MonGEN'nIEn AssIGNon To sAID WEAR.

POWER-DarvnN- MEAT-sAW.

Specification of Letters Patent.

.'Iatcnted July 2, 1912.

Application mea January 29, 191e. ,serial No. 540,821.

'To all 4Mahoma-t may concern:

Beit known that we, FRANK F. Wim: and

a'Rornrr MORGENEIER, citizens of the United States, residing,respectively,- at San Francisco, in the county of San Franclsco, and

.Oakland, in the county of Alameda and State of California, haveinvented new and useful Improvements in Power- Driven Meat- Saws, ofwhich the following 1s a. specification.

The `object of the present invention is to provide an electricalespecially a saw adapted for-cutting y operated saw, and bones inbutcher Ishops or the like, which will'be convenient in use andeffective in operation.

` In the` accompanying drawings, Figure 1 is a side view of the sawsuspendedfrom a .motor; Fig.- 2-is an enlargedv broken side end by a pin4 in a slot 5 of a forked tenslon Ahead 6, which has a stem 7 passinthrough the other end of the saw frame, eing adjusted the requiredtension therein by a nut 8 screwed on said stem.

9 indicates the casing for the saw frame,

` formed with side plates 10 extending on each side of the rear end ofthe frame and secured together by a screw 11, one of said plates havingan extension 12 reduced in width to be substantially the same width asthe frame and extending along the side, and over the top edge, but, atthe front end, extending over both sides for a short distance, as shownat 13. To said casing is attached the handle 14 by screws 15. Saidscrews 11 and 15 are rovided with spreaders 16 to space the si es of thecasing apart.

By means to be presently described, the saw frame is given areciprocating motion in said casing, and, for the 'purpose of guidingthe same in its reciprocating motion',

casing adjacent thereto, washers 20 being secured upon said screws bynuts 21. The saw frame is also formed at the end with openended slots 22to permit it to reciprocate, notwithstanding the screws 11, 15, whichconnect the two sides of lthe casing. Since these slots are open-endedit will be seen that the saw frame can readily be removed from thecasing by-unscrewing the nuts 21 and removlng the screws 19.

The rear portion of the saw frame is formedwith an elongated o ening 24for an eccentric 25. From each si e of said eccent-rlc vopening thereare two circular' extensions 26, whlch contain steel disks 27 againstwhich the eccentric bears' when impart-ing reclprocation to the sawframe. Said eccentric is mounted on a shaft 28, which passesl throughthe sides of the casing, one end bclng received in a bearing 29 securedon one side of the casing, and the other end having a step Ibearing in ablock 30 secured within a housing 31 attached to the other side of thecasing. Said shaft is driven by a bevel gear 32 thereon, meshing with abevel gear 33, both of said gears beingcontained within ythe housingf31, and the gear 33 being mounted on yvertical shaft 35 having a stepbearing in he'block 30 and rotating in a bearing 36 outside the housing.A collar 37' is secured to said shaft and retains the same in position.The upper end of said shaft is tapered to fit within a tapering socket3S attached to a flexible shaft 89 and removably attached to the shaft35 by a spring latch 40 .which enters a groove 41 in the tapering partof said shaft.V Said flexible shaft is driven by an overhead electricmotor 42 and serves when attached to the saw, not only to operate, butto suspend, the saw.

The conducting wires 43closing the circuit through the motor areconnected respectively with contacts of a socket which lits over a plug45, said plug being connected by wires 46 to the contacts of a pushbutton 47 on the left side of the handle, within easy reach of the thumbwhen grasping the handle.l Since the handle and the main ortion of thecasing and saw are on opposite sides of the polnt of suspension thereof,the apparatus when suspended and not in use hangs in a position readyforimmediate use.

The mode of operation of the device will be readily understood 'from theforegoing description. The butcher takes hold of the saw by means of thehandle and advances the saw through the meat, As the saw advancesitreciprocates' very rapidly and performsy the necessary sawing action.

At any time the butcher can stop the reciprocation' of` the'saw byremoving his thumb from the push button, and, if he so desires can use asaw as an ordinary butchers saw. Or if necessary he can remove the sawentirely from the flexible shaft and use it as an ordinary butchers saw.

We are `aware that it has been proposed,y as in the patent to Ludewig,No. 812,507, to

connect a. shaft for operatlng a reciprocating tool, as that of asurgical operating engine, Witha flexible shaft driven by a motor,

, handle and the greater portion of the casing and saw are on oppositesides of said shaft, or, more accurately speaklng, on opposite sides ofa vertical plane transverseto the saw and extending through said shaft.By

this construction t-he saW hangs freely in a position as nearly as,Ipossible balanced for use.v 1

We claim L l. In a vpower-driven saw, .the combination of a motor, aflexible shaft connected thereto and suspended-therefrom, a' casing, ahandle connected thereto, a shaft carried #by the casing, a saw guidedby the casing so as' to be reciprocable in a plane parallel to saidshaft andin a direction at right angles thereto, an operative connectionbetween said latter shaft and saw whereby, from the rotary motion of theshaft, reciprocating motion is imparted to said saw, the outer end ofsaid shaft being connected tothe flexible shaft, and said handle, andthe greater part Aof the casing and saw being on opposite sides of aplane transverse to the saw and extending longitudinally through saidshaft. l y 2. The combination of a casing comprising two side platesspaced from one another,

a handle secured to said casing, a' saw frame 1n said caslng having anelongated opcnmg therethrough, said opening having/two -circularextensions, steel disks in said extensions, a .shaft passing through thesides of the casing and mounted in bearings secured on said sides, aneccentric on said shaft between said side plates and bearing againstsaid steel disks, a beveled gear on said shaft outside said casing, amotor, a second shaft driven by said motor', and a beveled gear thereonmeshing with the rst-named beveled gear, substantially as described.

In testimony whereof We have hereunto set our hands in the presence oftwo subscribing Witnesses. FRANK F. WEAR. ROBERTy MORGENEIER, Witnesses:v v

FRANCIS M. WRrGHT, D. B, BIoHARDs.

